Openssh-server installation problem

[Andylau]

After typing the command "apt-get install openssh-server", the message below pops up:
-------------------------------
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package openssh-server is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'openssh-server' has no installation candidate
-------------------------------
I googled this message for a while and found this quite common when installing softwares.

Is there something not yet done so this problem is here? Any help appreciated. (fixed)

[wojox]

Which server version?

[Andylau]

Um...when I type
"sudo apt-get install openssh-server" to install the OpenSSH server application. It didnt specify the version. But to me, the latest would be great.

[wojox]

Sorry what Ubuntu version (number)? etc. 11.04, 10.04?

[Andylau]

Ubuntu version 11.04. Any help appreciated please

[Andylau]

When I typed this "sudo apt-get -y install openssh-server"
It works!

[newbie-user]

In my experience, if I ever get "Package 'openssh-server' has no installation candidate", that just means to run "apt-get update" first and then try to install.